MI 5200mAh External Battery (Power Bank, Portable Charger) with Premium Aluminum Alloy Surface - Compatible with iPhone 5S, iPad Air, Samsung Galaxy S4, Note 3, HTC One, Nokia Lumia, LG Nexus 10, Blackberry - Purple Award-winning aluminum alloy unibody surface. Creative and elegant style with unique design Constructed using Samsung original Grade A 5204mAh capacity cells and premium microchips to ensure safety worry-free use. Special high-output battery for ultra-fast charging Unbridled compatibility - Works with all major smart phone and tablet models. To maintain the sleek look, the four invisible LED status indicator lights disappear when you're not using the battery Improved conversion efficiency means more power actually makes it to your device 1 year manufacture warranty. Package includes Micro USB cable